Question about Zenith R49W36 49" Rear Projection HDTV

1 Answer

Zenith TV PV4667RK

Set works fine for about 35 to 45 minutes then screen goes black still have sound. turn set off for about 2 hrs picture will come back for about 35 to 45 minutes.

Thanks

 

Posted by on

  • Anonymous Mar 25, 2014

    have a very loud vibrating sound

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 36 Answers

This sounds like a thermal intermittent, either a component or a connector or most likely a solder joint.

when it heats up it expands losing its connection if its a solder joint. if its a component its a lot more complex.

i dont know your electronic/mechanical experience, a projection tv is very complex inside, several circuit boards, dozens of wiring connectors a whole lot of very high voltage, enough to be fatal and if not at least very painfull.

if you are experienced and able check all the solder connections on every circuit board under a magnifier, repair any bad ones.

after that the trouble shooting gets very complex as it must be done with the boards opened up and exposed while the set is running, you will require a set of schematics, component freeze spray, a spot heating gun, a high impedance meter, an oscilloscope, temperature controlled soldering equipment and possibly a signal injector of some sort.

if its worse than a bad solder joint it is probably best left to a service shop.

best of luck.

 

Posted on Oct 17, 2007

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Polaroid tv screen goes black after 30 40 minutes, sound is good. No picture. Turn set off and wait a few minutes and the picture returns for a few minutes then goes black again.


Ur tv now power on only have picture few mins,than dead,have sound only?Yes,than the 1 or 2 the long board call the LCD inverter boards are dead.The LCD inverter long boards help the LCD screen to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy 1 or 2 long LCD inverter boards for the replacement.

Jul 05, 2010 | Polaroid FLM-3232 Television

1 Answer

Problem With KENMARK flat Screen TV - BLACKS OUT


you do not give the model number for a better diagnosis
the most common cause of this problem is the invertor or at worse the screen its self.
If it is a lvd 163 you can purchase a new invertor from sales@tvs-services or call 01245392539

Feb 14, 2010 | Zenith IQC50H95W 50" Rear Projection...

1 Answer

Picture goes black but hear the sound


this is the problem related to display of ur TV screen...please contact the service centre...plz dont try to repair it urself..

Apr 30, 2009 | Sharp Aquos LC-C3234U 32 in. LCD TV

1 Answer

TV screen goes blank but power stays on


Sounds like the CRTs are going into protective blanking due to the vertical output ic needing to be resolderd. Try resoldering the vertical IC that may possibly fix the issue.

Jun 15, 2008 | Mitsubishi WS-73713 73" Rear Projection...

2 Answers

Tv screen goes black


No, if the picture of your tv screen is clear when when you watching. the troble of your tv is looseboard, and you replace your CRT socket too.

Apr 16, 2008 | Sony KV-35V35 TV

2 Answers

P42W46X Zenith Plasma - No Picture - Mostly Yellow on screen


Mine looks like too, but the line running across isn't on my set, picture looks like this, and the sound works fine. I took the tuner board all the way out and turned the set on and it did the same thing, then I unplugged the top wire on the board next to the tuner board and the screen went black. plugged it back in and the screen came back with the scrambled picture. Anyone know why? Bad mainboard maybe? the left of the tuner board?

Nov 25, 2007 | Zenith P42W46X 42 in. Plasma EDTV

1 Answer

LG LCD Tv picture goes black but the sound still works


Next time it goes dark do a flash light test to see if your inverter board is fubar.

May 03, 2017 | LG M4200C 42 in. HDTV-Ready LCD Television

Not finding what you are looking for?
Zenith R49W36 49" Rear Projection HDTV Logo

83 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zenith Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75774 Answers

matt martin
matt martin

Level 3 Expert

1229 Answers

Jaime Hernandez

Level 3 Expert

2336 Answers

Are you a Zenith Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...